// I don't see how to get all of the default differs and be able to
    // just add my own in place where I need it.
    ObjectDifferBuilder b = ObjectDifferBuilder.startBuilding();
    final DifferProvider differProvider = new DifferProvider();

    // notice all of the casts below.... the builder I'm using
    // provides access to all of the objects I need to construct the
    // differs but it returns them as their interfaces while the
    // actual constructors accept either the class or a different interface.
    final DifferDispatcher differDispatcher = new DifferDispatcher(
            differProvider,
            (CircularReferenceDetectorFactory)b.circularReferenceHandling(),
            (CircularReferenceExceptionHandler)b.circularReferenceHandling(),
            (IsIgnoredResolver)b.inclusion(),
            (IsReturnableResolver)b.filtering());

    // the default collection differ I want to use as a fallback if the collection type 
   // isn't what I'm looking for
    CollectionDiffer fallback = new CollectionDiffer(differDispatcher,
            (ComparisonStrategyResolver) b.comparison());

    differProvider.push(new BeanDiffer(differDispatcher,
            (IsIntrospectableResolver)b.introspection(),
            (IsReturnableResolver)b.filtering(),
            (ComparisonStrategyResolver)b.comparison(),
            (IntrospectorResolver)b.introspection()));

    // my first custom differ. It delegates to a fallback if the primary differ doesn't handle the type
    differProvider.push(new DelegatingCollectionDiffer(
            Arrays.<Differ>asList(new MyTypeOfObjectDiffer(differDispatcher)), fallback));

    differProvider.push(new MapDiffer(differDispatcher,
            (ComparisonStrategyResolver)b.comparison()));

    // here's another custom differ
    differProvider.push(new AnotherOfMyCustomDiffers(differDispatcher));
    differProvider.push(new PrimitiveDiffer(
            (PrimitiveDefaultValueModeResolver) b.comparison()));
    // all of the above just to get my differ registered
    objectDiffer = new ObjectDiffer(differDispatcher);